Estimation of load-maximizing power output using bench press and bench throw tests

BACKGROUND: We aimed to determine the relationship between bench press (BP) and bench throw (BT), with respect to the maximum mechanical power output (P_max) and load at P_max (P_max load). METHODS: Thirteen male collegiate football players participated in this study. During the first testing session, we determined each subject's one-repetition maximum (1RM) bench press strength using a Smith machine. During the second testing session, ballistic BP and BT exercises were performed using the Smith machine set at different loads ranging from 30.0 kg to 90% of 1RM. The barbell positions were measured using a linear position transducer, and barbell velocity, force, and power output during ballistic BP and BT were calculated using a dynamic equation. We determined P_max and P_max load by fitting second-order polynomials to the data. RESUlTS: The P_max of BP was significantly lower than the P_max of BT. However, the P_max load in BP was significantly greater than that in BT. The P_max of BT was significantly correlated with the P_max of BP; conversely, the P_max load in BT was not significantly correlated with the P_max load in BP. CONClUSIONS: Our results suggest that the P_max load is overestimated when using the BP test compared with BT. Furthermore, it is difficult to predict the P_max load in BT using the P_max load in BP.